<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2013 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Style
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
 * @version    1.7.9, 2013-06-02
 */


/**
 * PHPExcel_Style_Fill
 *
 * @category   PHPExcel
 * @package    PHPExcel_Style
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Style_Fill extends PHPExcel_Style_Supervisor implements PHPExcel_IComparable {
	/* Fill types */
	const FILL_NONE = 'none';
	const FILL_SOLID = 'solid';
	const FILL_GRADIENT_LINEAR = 'linear';
	const FILL_GRADIENT_PATH = 'path';
	const FILL_PATTERN_DARKDOWN = 'darkDown';
	const FILL_PATTERN_DARKGRAY = 'darkGray';
	const FILL_PATTERN_DARKGRID = 'darkGrid';
	const FILL_PATTERN_DARKHORIZONTAL = 'darkHorizontal';
	const FILL_PATTERN_DARKTRELLIS = 'darkTrellis';
	const FILL_PATTERN_DARKUP = 'darkUp';
	const FILL_PATTERN_DARKVERTICAL = 'darkVertical';
	const FILL_PATTERN_GRAY0625 = 'gray0625';
	const FILL_PATTERN_GRAY125 = 'gray125';
	const FILL_PATTERN_LIGHTDOWN = 'lightDown';
	const FILL_PATTERN_LIGHTGRAY = 'lightGray';
	const FILL_PATTERN_LIGHTGRID = 'lightGrid';
	const FILL_PATTERN_LIGHTHORIZONTAL = 'lightHorizontal';
	const FILL_PATTERN_LIGHTTRELLIS = 'lightTrellis';
	const FILL_PATTERN_LIGHTUP = 'lightUp';
	const FILL_PATTERN_LIGHTVERTICAL = 'lightVertical';
	const FILL_PATTERN_MEDIUMGRAY = 'mediumGray';

	/**
	 * Fill type
	 *
	 * @var string
	 */
	protected $_fillType = PHPExcel_Style_Fill::FILL_NONE;

	/**
	 * Rotation
	 *
	 * @var double
	 */
	protected $_rotation = 0;

	/**
	 * Start color
	 *
	 * @var PHPExcel_Style_Color
	 */
	protected $_startColor;

	/**
	 * End color
	 *
	 * @var PHPExcel_Style_Color
	 */
	protected $_endColor;

	/**
	 * Create a new PHPExcel_Style_Fill
	 *
	 * @param    boolean $isSupervisor        Flag indicating if this is a supervisor or not
	 *                                        Leave this value at default unless you understand exactly what
	 *                                        its ramifications are
	 * @param    boolean $isConditional       Flag indicating if this is a conditional style or not
	 *                                        Leave this value at default unless you understand exactly what
	 *                                        its ramifications are
	 */
	public function __construct($isSupervisor = false, $isConditional = false) {
		// Supervisor?
		parent::__construct($isSupervisor);

		// Initialise values
		if ($isConditional)
		{
			$this->_fillType = null;
		}
		$this->_startColor = new PHPExcel_Style_Color(PHPExcel_Style_Color::COLOR_WHITE, $isSupervisor, $isConditional);
		$this->_endColor = new PHPExcel_Style_Color(PHPExcel_Style_Color::COLOR_BLACK, $isSupervisor, $isConditional);

		// bind parent if we are a supervisor
		if ($isSupervisor)
		{
			$this->_startColor->bindParent($this, '_startColor');
			$this->_endColor->bindParent($this, '_endColor');
		}
	}

	/**
	 * Get the shared style component for the currently active cell in currently active sheet.
	 * Only used for style supervisor
	 *
	 * @return PHPExcel_Style_Fill
	 */
	public function getSharedComponent() {
		return $this->_parent->getSharedComponent()->getFill();
	}

	/**
	 * Build style array from subcomponents
	 *
	 * @param array $array
	 *
	 * @return array
	 */
	public function getStyleArray($array) {
		return array('fill' => $array);
	}

	/**
	 * Apply styles from array
	 *
	 * <code>
	 * $objPHPExcel->getActiveSheet()->getStyle('B2')->getFill()->applyFromArray(
	 *        array(
	 *            'type'       => PHPExcel_Style_Fill::FILL_GRADIENT_LINEAR,
	 *            'rotation'   => 0,
	 *            'startcolor' => array(
	 *                'rgb' => '000000'
	 *            ),
	 *            'endcolor'   => array(
	 *                'argb' => 'FFFFFFFF'
	 *            )
	 *        )
	 * );
	 * </code>
	 *
	 * @param    array $pStyles Array containing style information
	 *
	 * @throws    PHPExcel_Exception
	 * @return PHPExcel_Style_Fill
	 */
	public function applyFromArray($pStyles = null) {
		if (is_array($pStyles))
		{
			if ($this->_isSupervisor)
			{
				$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($this->getStyleArray($pStyles));
			}
			else
			{
				if (array_key_exists('type', $pStyles))
				{
					$this->setFillType($pStyles['type']);
				}
				if (array_key_exists('rotation', $pStyles))
				{
					$this->setRotation($pStyles['rotation']);
				}
				if (array_key_exists('startcolor', $pStyles))
				{
					$this->getStartColor()->applyFromArray($pStyles['startcolor']);
				}
				if (array_key_exists('endcolor', $pStyles))
				{
					$this->getEndColor()->applyFromArray($pStyles['endcolor']);
				}
				if (array_key_exists('color', $pStyles))
				{
					$this->getStartColor()->applyFromArray($pStyles['color']);
				}
			}
		}
		else
		{
			throw new PHPExcel_Exception("Invalid style array passed.");
		}

		return $this;
	}

	/**
	 * Get Fill Type
	 *
	 * @return string
	 */
	public function getFillType() {
		if ($this->_isSupervisor)
		{
			return $this->getSharedComponent()->getFillType();
		}

		return $this->_fillType;
	}

	/**
	 * Set Fill Type
	 *
	 * @param string $pValue PHPExcel_Style_Fill fill type
	 *
	 * @return PHPExcel_Style_Fill
	 */
	public function setFillType($pValue = PHPExcel_Style_Fill::FILL_NONE) {
		if ($this->_isSupervisor)
		{
			$styleArray = $this->getStyleArray(array('type' => $pValue));
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		}
		else
		{
			$this->_fillType = $pValue;
		}

		return $this;
	}

	/**
	 * Get Rotation
	 *
	 * @return double
	 */
	public function getRotation() {
		if ($this->_isSupervisor)
		{
			return $this->getSharedComponent()->getRotation();
		}

		return $this->_rotation;
	}

	/**
	 * Set Rotation
	 *
	 * @param double $pValue
	 *
	 * @return PHPExcel_Style_Fill
	 */
	public function setRotation($pValue = 0) {
		if ($this->_isSupervisor)
		{
			$styleArray = $this->getStyleArray(array('rotation' => $pValue));
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		}
		else
		{
			$this->_rotation = $pValue;
		}

		return $this;
	}

	/**
	 * Get Start Color
	 *
	 * @return PHPExcel_Style_Color
	 */
	public function getStartColor() {
		return $this->_startColor;
	}

	/**
	 * Set Start Color
	 *
	 * @param    PHPExcel_Style_Color $pValue
	 *
	 * @throws    PHPExcel_Exception
	 * @return PHPExcel_Style_Fill
	 */
	public function setStartColor(PHPExcel_Style_Color $pValue = null) {
		// make sure parameter is a real color and not a supervisor
		$color = $pValue->getIsSupervisor() ? $pValue->getSharedComponent() : $pValue;

		if ($this->_isSupervisor)
		{
			$styleArray = $this->getStartColor()->getStyleArray(array('argb' => $color->getARGB()));
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		}
		else
		{
			$this->_startColor = $color;
		}

		return $this;
	}

	/**
	 * Get End Color
	 *
	 * @return PHPExcel_Style_Color
	 */
	public function getEndColor() {
		return $this->_endColor;
	}

	/**
	 * Set End Color
	 *
	 * @param    PHPExcel_Style_Color $pValue
	 *
	 * @throws    PHPExcel_Exception
	 * @return PHPExcel_Style_Fill
	 */
	public function setEndColor(PHPExcel_Style_Color $pValue = null) {
		// make sure parameter is a real color and not a supervisor
		$color = $pValue->getIsSupervisor() ? $pValue->getSharedComponent() : $pValue;

		if ($this->_isSupervisor)
		{
			$styleArray = $this->getEndColor()->getStyleArray(array('argb' => $color->getARGB()));
			$this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
		}
		else
		{
			$this->_endColor = $color;
		}

		return $this;
	}

	/**
	 * Get hash code
	 *
	 * @return string    Hash code
	 */
	public function getHashCode() {
		if ($this->_isSupervisor)
		{
			return $this->getSharedComponent()->getHashCode();
		}

		return md5($this->getFillType() . $this->getRotation() . $this->getStartColor()->getHashCode() . $this->getEndColor()->getHashCode() . __CLASS__);
	}

}
